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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018
* Lukasz Majewski, DENX Software Engineering, lukma@denx.de
*
* Based on code developed by:
*
* Copyright (C) 2012 TQ-Systems GmbH
* Daniel Gericke <daniel.gericke@tqs.de>
*/
#include <common.h>
#include <environment.h>
#include <i2c.h>
#include "kp_id_rev.h"
static int eeprom_has_been_read;
static struct id_eeprom eeprom;
void show_eeprom(void)
{
char safe_string[33];
int i;
u8 *p;
puts("Module EEPROM:\n");
/* ID */
for (i = 0; i <= sizeof(eeprom.id) && 0xff != eeprom.id[i]; ++i)
safe_string[i] = eeprom.id[i];
safe_string[i] = '\0';
if (!strncmp(safe_string, "TQM", 3)) {
printf(" ID: %s\n", safe_string);
env_set("boardtype", safe_string);
} else {
puts(" unknown hardware variant\n");
}
/* Serial number */
for (i = 0; (sizeof(eeprom.serial) >= i) &&
(eeprom.serial[i] >= 0x30) &&
(eeprom.serial[i] <= 0x39); ++i)
safe_string[i] = eeprom.serial[i];
safe_string[i] = '\0';
if (strlen(safe_string) == 8) {
printf(" SN: %s\n", safe_string);
env_set("serial#", safe_string);
} else {
puts(" unknown serial number\n");
}
/* MAC address */
p = eeprom.mac;
if (!is_valid_ethaddr(p)) {
printf(" Not valid ETH EEPROM addr!\n");
return;
}
printf(" MAC: %02x:%02x:%02x:%02x:%02x:%02x\n",
p[0], p[1], p[2], p[3], p[4], p[5]);
eth_env_set_enetaddr("ethaddr", p);
}
int read_eeprom(void)
{
struct udevice *dev;
int ret;
if (eeprom_has_been_read)
return 0;
ret = i2c_get_chip_for_busnum(CONFIG_SYS_EEPROM_BUS_NUM,
CONFIG_SYS_I2C_EEPROM_ADDR,
CONFIG_SYS_I2C_EEPROM_ADDR_LEN, &dev);
if (ret) {
printf("Cannot find EEPROM !\n");
return ret;
}
ret = dm_i2c_read(dev, 0x0, (uchar *)&eeprom, sizeof(eeprom));
eeprom_has_been_read = (ret == 0) ? 1 : 0;
return ret;
}
int read_board_id(void)
{
unsigned char rev_id = 0x42;
char rev_str[32], buf[8];
struct udevice *dev;
int ret;
ret = i2c_get_chip_for_busnum(2, 0x22, 1, &dev);
if (ret) {
printf("Cannot find pcf8574 IO expander !\n");
return ret;
}
dm_i2c_read(dev, 0x0, &rev_id, sizeof(rev_id));
sprintf(rev_str, "%02X", rev_id);
if (rev_id & 0x80) {
printf("BBoard:4x00 Rev:%s\n", rev_str);
env_set("boardtype", "ddc");
env_set("fit_config", "imx53_kb_conf");
} else {
printf("BBoard:40x0 Rev:%s\n", rev_str);
env_set("boardtype", "hsc");
env_set("fit_config", "imx53_kb_40x0_conf");
}
sprintf(buf, "kp-%s", env_get("boardtype"));
env_set("boardname", buf);
env_set("boardsoc", "imx53");
env_set("kb53_rev", rev_str);
return 0;
}
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